diff --git a/htdocs/adherents/class/adherent.class.php b/htdocs/adherents/class/adherent.class.php
index b03bff940dd..fd30c21486d 100644
--- a/htdocs/adherents/class/adherent.class.php
+++ b/htdocs/adherents/class/adherent.class.php
@@ -90,6 +90,7 @@ class Adherent extends CommonObject
     var $user_login;
 
     var $fk_soc;
+	var $thirdparty;		// Loaded by ->fetch_thirdparty()
 
     // Fields loaded by fetch_subscriptions()
     var $first_subscription_date;